Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 28-10-2018 and time 20:24:23 (UTC) in region 4 km W Trevi (PG)

A magnitude ML 2.0 earthquake occured in region: 4 km W Trevi (PG), on

  • 28-10-2018 20:24:23 (UTC)
  • 28-10-2018 21:24:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8800, 12.7000 at 7 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Trevi PG 4 8469 8469
Montefalco PG 4 5679 14148
Castel Ritaldi PG 7 3278 17426
Foligno PG 9 57155 74581
Campello sul Clitunno PG 9 2442 77023
Bevagna PG 10 5081 82104
Giano dell'Umbria PG 11 3846 85950
Gualdo Cattaneo PG 12 6155 92105
Spello PG 13 8645 100750
Cannara PG 16 4305 105055
Spoleto PG 16 38218 143273
Vallo di Nera PG 18 364 143637
Massa Martana PG 18 3770 147407
Sellano PG 19 1079 148486
Cerreto di Spoleto PG 19 1075 149561
Sant'Anatolia di Narco PG 20 564 150125

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km S of Foligno (57155 inhabitants)
36 Km N of Terni (111501 inhabitants)
36 Km SE of Perugia (166134 inhabitants)
71 Km NE of Viterbo (67173 inhabitants)
82 Km NW of L'Aquila (69753 inhabitants)
86 Km W of Teramo (54892 inhabitants)
93 Km SE of Arezzo (99543 inhabitants)
98 Km N of Guidonia Montecelio (88673 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 2.0 2018-10-28
20:24:23		 42.8802 12.6998 7 2019-06-04
09:16:17		 Bollettino Sismico Italiano INGV 68573421
Reviewed
Rev100 		ML 2.0 2018-10-28
20:24:23		 42.8793 12.7017 10 2018-10-28
20:32:18		 Sala Sismica INGV-Roma 62490471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-10-28 20:24:23 ± 0.08
Latitude 42.8802 ± 0.0027
Longitude 12.6998 ± 0.0049
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 68573421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 394
Semi-minor axis of confidence ellipse (meter) 183
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 252
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
Number of associated phases, regardless of their use for origin computation 52
Number of defining phases 49
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.71136
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 28
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 43
Type of magnitude ML
Reference to an origin 68573421
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-05-15 16:23:57

ML:2.0

Field Value
Value 2.0
Uncertainty 0.1
Num. used stations 28
Type of magnitude ML
Reference to an origin 62490471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-10-28 20:32:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IFOR.HHZ. 2018-10-28T20:25:36.73 3.0 undecidable manual Sg 5.72 0
IV.FIAM.HHZ. 2018-10-28T20:24:47.20 0.3 undecidable manual S 153 75.9684 50 0.4 66
IV.TERO.HHZ. 2018-10-28T20:24:47.90 0.3 undecidable manual S 111 78.9654 50 0.3 67
IV.MF5.EHZ. 2018-10-28T20:24:44.20 0.3 undecidable manual S 79 62.8926 50 0.91 56
IV.SSFR.HHN. 2018-10-28T20:24:43.62 0.3 undecidable manual S 6 62.0934 50 0.54 65
IV.ATSC.EHE. 2018-10-28T20:24:43.00 0.3 undecidable manual S 359 60.2952 50 0.38 68
IV.MTRA.EHZ. 2018-10-28T20:24:42.20 0.3 undecidable manual S 103 58.2972 50 0.12 72
IV.RM33.EHZ. 2018-10-28T20:24:42.50 0.3 undecidable manual S 134 58.7967 50 0.29 70
IV.ATLO.EHE. 2018-10-28T20:24:41.36 0.3 undecidable manual S 334 53.8017 50 0.49 67
IV.ATFO.HHN. 2018-10-28T20:24:41.99 0.3 undecidable manual S 349 54.9006 50 0.81 59
IV.MMO1.EHZ. 2018-10-28T20:24:39.90 0.3 undecidable manual S 87 51.0156 50 -0.23 72
IV.MURB.HHZ. 2018-10-28T20:24:38.60 0.3 undecidable manual S 342 44.8218 50 0.13 74
IV.SNTG.HHZ. 2018-10-28T20:24:38.80 0.3 undecidable manual S 25 45.9207 50 0.02 76
IV.TERO.HHZ. 2018-10-28T20:24:37.12 0.1 undecidable manual P 111 78.9654 50 -0.12 93
IV.MC2.EHZ. 2018-10-28T20:24:37.60 0.6 undecidable manual S 85 39.9267 100 0.48 46
IV.FIAM.HHZ. 2018-10-28T20:24:36.67 0.1 undecidable manual P 153 75.9684 50 -0.11 94
IV.PIEI.HHZ. 2018-10-28T20:24:36.20 0.1 undecidable manual P 350 73.9704 50 -0.26 91
IV.ARVD.HHZ. 2018-10-28T20:24:35.78 0.1 undecidable manual P 16 71.2731 50 -0.27 91
IV.NRCA.HHZ. 2018-10-28T20:24:35.30 0.3 undecidable manual S 99 34.1436 101 0.16 75
IV.FDMO.HHZ. 2018-10-28T20:24:35.60 0.1 undecidable manual S 61 35.9418 101 -0.16 100
IV.MML1.EHN. 2018-10-28T20:24:35.00 0.3 undecidable manual S 40 34.0437 101 -0.11 76
IV.ARRO.EHZ. 2018-10-28T20:24:35.40 0.3 undecidable manual S 171 33.8439 101 0.35 72
IV.ATSC.EHE. 2018-10-28T20:24:34.04 0.1 undecidable manual P 359 60.2952 50 -0.33 92
IV.CESX.HHZ. 2018-10-28T20:24:34.10 0.6 undecidable manual S 197 31.5462 102 -0.17 50
IV.MF5.EHZ. 2018-10-28T20:24:34.93 0.1 undecidable manual P 79 62.8926 50 0.17 95
IV.SSFR.HHN. 2018-10-28T20:24:34.97 0.1 undecidable manual P 6 62.0934 50 0.34 92
IV.FEMA.HNE. 2018-10-28T20:24:34.00 0.6 undecidable manual S 72 29.8479 103 0.3 49
IV.ATVO.HHZ. 2018-10-28T20:24:34.00 0.1 undecidable manual P 337 60.495 50 -0.4 91
IV.SMA1.EHZ. 2018-10-28T20:24:33.94 0.1 undecidable manual P 118 58.6968 50 -0.18 95
IV.ATFO.HHN. 2018-10-28T20:24:33.61 0.1 undecidable manual P 349 54.9006 50 0.07 98
IV.MTRA.EHZ. 2018-10-28T20:24:33.67 0.1 undecidable manual P 103 58.2972 50 -0.38 91
IV.EL6.EHZ. 2018-10-28T20:24:33.86 0.1 undecidable manual P 33 59.496 50 -0.38 91
IV.RM33.EHZ. 2018-10-28T20:24:33.79 0.1 undecidable manual P 134 58.7967 50 -0.34 92
IV.MMO1.EHZ. 2018-10-28T20:24:32.62 0.3 undecidable manual P 87 51.0156 50 -0.31 70
IV.ATLO.EHE. 2018-10-28T20:24:32.99 0.1 undecidable manual P 334 53.8017 50 -0.36 93
IV.GAVE.EHZ. 2018-10-28T20:24:32.90 3.0 undecidable manual S 0.06 0
IV.SNTG.HHZ. 2018-10-28T20:24:32.30 0.1 undecidable manual P 25 45.9207 50 0.15 98
IV.MURB.HHZ. 2018-10-28T20:24:31.68 0.1 undecidable manual P 342 44.8218 50 -0.29 95
IV.ATTE.HHN. 2018-10-28T20:24:31.55 0.1 undecidable manual P 322 45.0216 50 -0.47 92
IV.CESI.HHZ. 2018-10-28T20:24:31.50 0.6 undecidable manual S 50 21.6672 107 0.56 46
IV.LNSS.HHZ. 2018-10-28T20:24:31.00 0.1 undecidable manual P 138 41.4252 50 -0.45 93
IV.MC2.EHZ. 2018-10-28T20:24:30.61 0.3 undecidable manual P 85 39.9267 100 -0.58 67
IV.FDMO.HHZ. 2018-10-28T20:24:30.21 0.1 positive manual P 61 35.9418 101 -0.19 99
IV.ARRO.EHZ. 2018-10-28T20:24:30.13 0.3 positive manual P 171 33.8439 101 0.14 75
IV.FEMA.HNE. 2018-10-28T20:24:29.32 0.3 undecidable manual P 72 29.8479 103 0.11 76
IV.MML1.EHN. 2018-10-28T20:24:29.83 0.1 undecidable manual P 40 34.0437 101 -0.2 99
IV.CESX.HHZ. 2018-10-28T20:24:29.36 0.1 undecidable manual P 197 31.5462 102 -0.18 100
IV.MOMA.HHZ. 2018-10-28T20:24:29.30 0.6 undecidable manual S 231 13.5753 116 0.97 40
IV.NRCA.HHZ. 2018-10-28T20:24:29.85 0.1 undecidable manual P 99 34.1436 101 -0.19 99
IV.GAVE.EHZ. 2018-10-28T20:24:28.71 3.0 undecidable manual P -0.07 0
IV.CESI.HHZ. 2018-10-28T20:24:27.93 0.1 positive manual P 50 21.6672 107 0.31 99
IV.MOMA.HHZ. 2018-10-28T20:24:26.56 0.1 positive manual P 231 13.5753 116 0.45 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HNN. ML:0.0 0.0017256645000000002 0.384 AML other m 2018-10-28T20:24:30.26
IV.MOMA.HHN. ML:0.0 0.00142907965 0.2816 AML other m 2018-10-28T20:24:30.07
IV.MOMA.HNE. ML:0.0 0.001396866 0.1536 AML other m 2018-10-28T20:24:29.84
IV.MOMA.HHE. ML:0.0 0.001568646 0.2816 AML other m 2018-10-28T20:24:30.71
IV.CESI.HHE. ML:0.0 0.00042020210000000003 0.2304 AML other m 2018-10-28T20:24:33.13
IV.CESI.HHN. ML:0.0 0.00054167725 0.2176 AML other m 2018-10-28T20:24:34.20
IV.CESX.HHE. ML:0.0 0.00045758225000000003 0.3072 AML other m 2018-10-28T20:24:37.91
IV.NRCA.HHN. ML:0.0 0.0006087986000000001 0.1024 AML other m 2018-10-28T20:24:35.69
IV.NRCA.HNN. ML:0.0 0.0005918914500000001 0.1152 AML other m 2018-10-28T20:24:35.75
IV.CESX.HHN. ML:0.0 0.0006101278999999999 0.512 AML other m 2018-10-28T20:24:35.79
IV.FDMO.HHN. ML:0.0 0.0002561236 0.4224 AML other m 2018-10-28T20:24:36.36
IV.NRCA.HHE. ML:0.0 0.0004677039 0.1536 AML other m 2018-10-28T20:24:36.86
IV.NRCA.HNE. ML:0.0 0.00040819985 0.1536 AML other m 2018-10-28T20:24:36.86
IV.ARRO.EHE. ML:0.0 0.00030311615 0.192 AML other m 2018-10-28T20:24:36.61
IV.ARRO.EHN. ML:0.0 0.00025831365 0.1664 AML other m 2018-10-28T20:24:36.58
IV.FDMO.HHE. ML:0.0 0.00026858110000000003 0.192 AML other m 2018-10-28T20:24:37.36
IV.LNSS.HHN. ML:0.0 0.00028152509999999995 0.1408 AML other m 2018-10-28T20:24:40.05
IV.MURB.HNE. ML:0.0 0.00076803695 0.3456 AML other m 2018-10-28T20:24:39.07
IV.MURB.HHE. ML:0.0 0.0007904863 0.2816 AML other m 2018-10-28T20:24:39.07
IV.MURB.HHN. ML:0.0 0.0007971332499999999 0.2816 AML other m 2018-10-28T20:24:40.36
IV.MURB.HNN. ML:0.0 0.0007907950500000001 0.3072 AML other m 2018-10-28T20:24:40.38
IV.LNSS.HHE. ML:0.0 0.0003297175 0.2816 AML other m 2018-10-28T20:24:41.80
IV.SMA1.EHN. ML:0.0 0.00019945235 0.4224 AML other m 2018-10-28T20:24:43.94
IV.MTRA.EHE. ML:0.0 0.00021688574999999998 0.2816 AML other m 2018-10-28T20:24:44.43
IV.RM33.EHE. ML:0.0 0.00014313198999999998 0.3712 AML other m 2018-10-28T20:24:44.45
IV.RM33.EHN. ML:0.0 0.0001280962 0.256 AML other m 2018-10-28T20:24:44.88
IV.MTRA.EHN. ML:0.0 0.00014963860000000002 0.2944 AML other m 2018-10-28T20:24:43.99
IV.SMA1.EHE. ML:0.0 0.00016197509999999997 0.2816 AML other m 2018-10-28T20:24:43.78
IV.PIEI.HHN. ML:0.0 0.00006696542 0.2944 AML other m 2018-10-28T20:24:48.35
IV.FIAM.HHN. ML:1.9 0.0001225 1 AML other m 2018-10-28T20:24:48.47
IV.PIEI.HHE. ML:0.0 0.00008845 0.5 AML other m 2018-10-28T20:24:49.28
IV.FIAM.HHE. ML:1.8 0.0000977 0.42 AML other m 2018-10-28T20:24:49.16
IV.GAVE.EHE. ML:2.0 0.0005633094999999999 0.128 AML other m 2018-10-28T20:24:34.44
IV.GAVE.HNN. ML:1.6 0.00022030769999999998 0.6784 AML other m 2018-10-28T20:24:36.60
IV.GAVE.EHN. ML:1.9 0.00047488969999999995 0.6784 AML other m 2018-10-28T20:24:36.60
IV.GAVE.HNE. ML:2.0 0.00057875 0.32 AML other m 2018-10-28T20:24:37.38
IV.SNTG.HHN. ML:1.7 0.00013301205 0.32 AML other m 2018-10-28T20:24:41.64
IV.MTRA.HNN. ML:2.0 0.00024166390000000002 0.8832 AML other m 2018-10-28T20:24:45.11
IV.MTRA.HNE. ML:2.1 0.00029076095000000004 0.2816 AML other m 2018-10-28T20:24:44.44
IV.RM33.HNN. ML:2.0 0.00021157625 0.7936 AML other m 2018-10-28T20:24:44.48
IV.EL6.EHN. ML:2.0 0.00020778475999999997 0.9856 AML other m 2018-10-28T20:24:44.32
IV.ATVO.HHN. ML:1.5 0.00007102168 0.3968 AML other m 2018-10-28T20:24:49.91
IV.ATVO.HHE. ML:1.6 0.00007397878 0.9088 AML other m 2018-10-28T20:24:46.04
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download